Law-enforcement sources in Maryland's Prince George's County -- a suburb of Washington, D.C., and America's wealthiest black county -- told local news station WJLA this morning that they believe they have foiled a shooting that "could have been another Aurora," making reference to last Friday's mass shooting at a Colorado movie theater.

The suspect, who has yet to be identified, was reportedly arrested on Thursday night. A source told WJLA that he had been facing termination from his job.